<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin:0px;
            padding:0px;
        }
        html,body{
            height:100%;
        }
        div.bg{
            height:100%;
            background-image: url(./images/background.jpg);
            animation-name: bg;
            animation-duration: 30s;
            animation-iteration-count: infinite;
            animation-timing-function: linear;
        }
        div.content{
            width:1000px;
            height:180px;
            position: absolute;
            left:230px;
            bottom:100px;
        }
        div.content li{
            width:200px;
            height:180px;
            list-style-type: none;
            float:left;
            overflow: hidden;
            margin-right: 50px;
        } 
        div.content li div{
            width: 1600px;
            height:180px;
            animation-name: move;
            animation-duration: 2s;
            animation-timing-function: steps(8);
            animation-iteration-count: infinite;
        }
        div.content li div img{
            width:1600px;
            height:180px;
        }
        @keyframes move{
            from{
                margin-left: 0px;
            }
            to{
                margin-left: -1600px;
            }
        }
        @keyframes bg{
            from{
                margin-left: -1600px;
            }
            to{
                margin-left: 0px;
            }
        }
    </style>
</head>
<body>
    <div class="bg"></div>
    <div class="content">
        <ul>
            <li>
                <div>
                    <img src="./images/wk.png" alt="">
                </div>
            </li>
            <li>
                <div>
                    <img src="./images/bj.png" alt="">
                </div>
            </li>
            <li>
                <div>
                    <img src="./images/tc.png" alt="">
                </div>
            </li>
            <li>
                <div>
                    <img src="./images/sc.png" alt="">
                </div>
            </li>
        </ul>
    </div>
</body>
</html>